LowStandards
Club Retro Rides Member
Club Retro Rides Member 231
Posts: 2,716
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Apr 25, 2024 21:00:58 GMT
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Little and often The axle had a very small ratio, yet very large pitch gearset on it and it lacked a brake as they're built into the gearbox on mowers. All I had to do was take it apart, mark up and drill the holes and I now have 219 pitch chains which are standard kart stuffs and the brake. The savvy will note I swapped the sprocket to the other side of the diff as I wanted the brake closer to the bearing as the kart and I will produce more braking torques than the lil engine can produce forward momentums I also played with the idea of rear steer, but I'm leaving it as an idea I will build one, but the engine will sit over the rear wheel and rotate with it and the front axle will be 2 separate axles as steering will have to run through the middle of it. The clutch has been ordered and the bearings for the jackshaft have arrived. I guess the main bits to do now are mount the engine and the tiller, seat, floorpan Any ideas on throttle/brake. I'm not keen on pedals over rough surfaces
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Any ideas on throttle/brake. I'm not keen on pedals over rough surfaces If you want to do a lever for the brake, you might get a bike calliper over that disc. Halfords do a pretty cheap lever/calliper combo pack but I bet there’s cheaper no brand Chinese ones on eBay. Mini moto throttle twist grip might even be the same diameter as bike bars (22.2mm?).
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LowStandards
Club Retro Rides Member
Club Retro Rides Member 231
Posts: 2,716
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Disc is 3mm wide I've been eying up the really cheap cable calipers which are adjustable in width. It wont need a huge amount of stopping power But then at the same time you can get a pitbike rear brake full setup for £20 on eBay, master cyl, hose, caliper and mount I say I don't like pedals over rough terrain, but I really mean the throttle as you tend to on/off/on/off it as you hit bumps, but as you're pressing on the brake the pedal works fine. A lever on the left, push for go, pull for stop would be awesome, but there's some things to work out to stop cables etc being stretched
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4-way tiller would be pretty dangerous hilarious. Forwards for go, backwards for stop, left and right for, uh, left and right
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Last Edit: Apr 26, 2024 9:05:04 GMT by Jonny69
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LowStandards
Club Retro Rides Member
Club Retro Rides Member 231
Posts: 2,716
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Smol update that took some time These engines are not designed for clutches, the shaft is 3/4 which is the same as Honda GXs so at least the clutch fits the shaft, but the shaft is much much shorter So I needed to take up that space Grabbed an old bit of axle and turned it down on the lathe to make up a plug. I had to them machine a keyway into it to fit the keyway on the clutch. Ignore the extra keyway on the larger part, that's from the bit of axle I used, we don't waste things I then drilled and tapped the shaft to M8 and fitted it all up - another job ticked off
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LowStandards
Club Retro Rides Member
Club Retro Rides Member 231
Posts: 2,716
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Apr 29, 2024 12:32:31 GMT
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Quick half hour lunch Made a tiller, still haven't decided if i'll steer left or right handed as I still havn't decided on the throttle or brake I'm leaning towards a thumb throttle on the tiller and a pull lever for the brakes Welded up the rear, just a bit of flat bar to make up the shape and mounted the engine in place There's a slight weight distribution issue , i'll fix this by leaning forward when I want to steer, because wheelies are hella fun. Or maybe a basket out the front full of beer I'll have to make up a wheelie bar on the engine mount as the oil drain on these engines sticks out the back and would get damaged
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bstardchild
Club Retro Rides Member
Posts: 14,968
Club RR Member Number: 71
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Apr 29, 2024 22:23:18 GMT
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Does the front wheel rotate 360 with no restrictions? If it does have you an option for left or right handed tiller
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LowStandards
Club Retro Rides Member
Club Retro Rides Member 231
Posts: 2,716
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It does at the minute, but I fear I may need to add stops as a 90 degree wheel would stop the thing dead Maybe that could be the brake
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Rich
Club Retro Rides Member
Posts: 6,335
Club RR Member Number: 160
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It does at the minute, but I fear I may need to add stops as a 90 degree wheel would stop the thing dead Maybe that could be the brake Power boat style emergency stop. Just with more danger.
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LowStandards
Club Retro Rides Member
Club Retro Rides Member 231
Posts: 2,716
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Apr 30, 2024 12:44:37 GMT
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Decided on right hand steer, it's my strongest grip - i've been training for years Lets look at the brake lever / throttle Many ideas have ran through my head, but the easiest and most comfortable is a left hand lever you pull back for the brake. I also happened to have a nice vintage twist throttle from an old moped, so that's what i've gone with. Nice and simple, just a bit of 10mm round bar through a couple of plates. I'll add a cam to this bar which will pull on the brake caliper I've cut the base for the seat, I need to make up a back rest as well. I've ordered some foam and vinyl fabric, so I can get the seats made up of an evening There's a plasma cut clutch cover being made as well, as I don't like how modern it looks And i'm looking for an early peanut tank which bolts to the top of the engine, annoyingly you can buy the whole mowers for about £20, but people want silly money for parts, so hopefully I can find one reasonable. I've got an ally pullstart off the earlier engine to fit as well Pic for reference of the tank and pullstart
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Apr 30, 2024 13:53:49 GMT
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Fun wee device coming together there!
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LowStandards
Club Retro Rides Member
Club Retro Rides Member 231
Posts: 2,716
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More plates cuts Clutch cover, rear seat mounts (adjustable) and 2 jackshaft mounts The jackshaft mounts and clutch cover come together like so and hold the bearings They got welded in here, which is an awful picture. I've also just realised i've not knocked any of the slag off the welds in these pictures. Don't get me wrong, i'm still re-learning Arc, but it's not as bad as they currently look And the clutch cover got a band rolled and welded in. The text has worked out so much better using a single line font
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Davey
Posted a lot
Resident Tyre Nerd.
Posts: 2,348
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I have many many MANY mountain bike brake callipers, let me know if you want to try anything.
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K11 Micra x3 - Mk3 astra - Seat Marbella - Mk6 Escort estate - B5 Passat - Alfa 156 estate - E36 compact Mk2 MR2 T-bar - E46 328i - Skoda Superb - Fiat seicento - 6n2 Polo - 6n polo 1.6 - Mk1 GS300 EU8 civic type S - MG ZT cdti - R56 MINI Cooper S - Audi A3 8p - Jaguar XF (X250) - FN2 Civic Type R - Mk2 2.0i Ford Focus - Mercedes W212 E250
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LowStandards
Club Retro Rides Member
Club Retro Rides Member 231
Posts: 2,716
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I have many many MANY mountain bike brake callipers, let me know if you want to try anything. I ordered the mechanical ones from eBay - they're Mini Moto ones, pretty decent by the looks of things Cheers
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LowStandards
Club Retro Rides Member
Club Retro Rides Member 231
Posts: 2,716
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I honestly don't think this will be finished for RRW, there's lots of little things to do, but i'll plod on regardless Finished the jackshaft, made up some steel spacers, bolted it all in Brake is in place, just need to make up a rod to connect it to the handbrake Seat back in now in place, fully adjustable from Bolt upright to save my old back: to Corsa A in a maccys: Overall view is starting to look good. I reckon it will really look the part once the floor is in place as the front end is just any how atm
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Nice I was lucky, travelled all the way to Newark Jumble and bought Two Baja Doodle Bugs from a bloke who lives near me! Just fitted a 212cc 7HP engine in one in place of the 97cc original. Hoping to finish it in a few weeks. Thinking of making the other Electric so any ideas let me know I assume you have seen this?
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It will come in handy even if you never use it
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LowStandards
Club Retro Rides Member
Club Retro Rides Member 231
Posts: 2,716
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Idiot
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jimi
Club Retro Rides Member
Posts: 2,219
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What does it say
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Black is not a colour ! .... Its the absence of colour
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Rich
Club Retro Rides Member
Posts: 6,335
Club RR Member Number: 160
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What does it say Smol creations
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